5210421 has 8 divisors (see below), whose sum is σ = 6984000. Its totient is φ = 3455232.

The previous prime is 5210411. The next prime is 5210423. The reversal of 5210421 is 1240125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5210421 - 2¹⁰ = 5209397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5210421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5210423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3921 + ... + 5078.

It is an arithmetic number, because the mean of its divisors is an integer number (873000).

Almost surely, 2^5210421 is an apocalyptic number.

It is an amenable number.

5210421 is a deficient number, since it is larger than the sum of its proper divisors (1773579).

5210421 is a wasteful number, since it uses less digits than its factorization.

5210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9195.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 5210421 is about 2282.6346619641. The cubic root of 5210421 is about 173.3634756094.

Adding to 5210421 its reverse (1240125), we get a palindrome (6450546).

It can be divided in two parts, 52104 and 21, that added together give a palindrome (52125).

The spelling of 5210421 in words is "five million, two hundred ten thousand, four hundred twenty-one".